id:A054233 - OEIS Search Results

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Number of positive integers <= 2^n of form x^2 + 20 y^2.

+0
1

1, 1, 2, 2, 4, 9, 14, 26, 47, 85, 158, 295, 552, 1048, 2000, 3829, 7373, 14216, 27505, 53378, 103728, 201981, 393900, 769192, 1503947, 2943906, 5767973, 11311511, 22200845, 43605974, 85707102, 168564864, 331720141, 653151962, 1286702079 (list; graph; listen)

	OFFSET	`0,3`
	CROSSREFS	`Sequence in context: A019822 A105152 A066346 this_sequence A054231 A054230 A054232` `Adjacent sequences: A054230 A054231 A054232 this_sequence A054234 A054235 A054236`
	KEYWORD	`nonn`
	AUTHOR	`David W. Wilson (davidwwilson(AT)comcast.net)`

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Last modified September 6 16:04 EDT 2008. Contains 143483 sequences.

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